<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>Returns the installation character set</title>
 </head>
 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.ingres-charset" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ingres_charset</h1>
  <p class="verinfo">(PECL ingres &gt;= 2.1.0)</p><p class="refpurpose"><span class="refname">ingres_charset</span> &mdash; <span class="dc-title">Returns the installation character set</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.ingres-charset-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>ingres_charset</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link</code></span>
   ) : <span class="type">string</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>ingres_charset()</strong></span> is called to determine the character
   set being used by the Ingres client, from II_CHARSETxx (where xx is the
   installation code).
  </p>
   <blockquote class="note"><p><strong class="note">Note</strong>: 
    <p class="para">
     You can override the value returned by using the function
     <span class="function"><a href="putenv.html" class="function">putenv()</a></span>. Changing the value of II_CHARSETxx in a
     running Ingres installation can cause data corruption.
    </p>
  </p></blockquote>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.ingres-charset-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">link</code></dt>

     <dd>

      <p class="para">
       The connection link identifier
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.ingres-charset-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a string with the value for II_CHARSETxx or returns NULL if the value
   could not be determined.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.ingres-charset-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-1297">
    <p><strong>Example #1 <span class="function"><strong>ingres_charset()</strong></span> - Get the installation character set</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ingres_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$user</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #0000BB">ingres_charset</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">ingres_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.ingres-charset-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="ingres_connect.html" class="function" rel="rdfs-seeAlso">ingres_connect()</a> - Open a connection to an Ingres database</span></li>
    <li class="member"><span class="function"><a href="ingres_query.html" class="function" rel="rdfs-seeAlso">ingres_query()</a> - Send an SQL query to Ingres</span></li>
   </ul>
  </p>
 </div>


</div></div></div></body></html>